Example showing a promisified SSM config reader for SecureString parameters

getSsmConfig.js

const AWS = require('aws-sdk');

const ssm = new AWS.SSM();

const configFeatures = {
  '/path/to/your/config/option': 'someOption',
  '/path/to/your/config/something_else': 'somethingElse'
};

const getConfig = () =>
  new Promise((resolve, reject) => {
    ssm.getParameters(
      {
        Names: Object.keys(configFeatures),
        WithDecryption: true
      },
      (err, data) => {
        if (err) {
          console.log(err, err.stack);
          reject(err);
        } else {
          const config = data.Parameters.reduce(
            (cfg, i) => ({
              ...cfg,
              [configFeatures[i.Name]]: i.Value
            }),
            {}
          );
          resolve(config);
        }
      }
    );
  });

module.exports = getConfig;